Chinese Stock Screen Using Intraday Range, Price, and Control Ratio
Summary
This Chinese stock screen combines a daily price range threshold, a fixed closing price, and a measure described as the proportion of trading attributed to dominant participants. The article explains that the range condition is intended to select more volatile shares, while the control ratio is treated as a sign of substantial major-player activity. It also suggests adding technical or fundamental measures and applying profit-taking and stop-loss rules. The post includes formula and Python examples, but their implementation is inconsistent: the title gives a price of 18, the prose and code use 18.5, and the code’s volume-to-amount calculation does not clearly match the stated control ratio.
The article warns that a single-day control measure may miss longer-term trends and that narrow price and range filters can exclude other candidates. It presents no backtest, portfolio construction, or evidence that the screen improves returns. The thresholds and underlying data definitions therefore need verification before use, and the screen should be regarded as an illustrative filter rather than a validated strategy.
Key ideas
- The proposed screen combines a daily range threshold, a fixed closing price, and a dominant-participant activity ratio.
- The article interprets a higher activity ratio as evidence of major-player involvement.
- It recommends combining the filter with other technical or fundamental analysis and risk controls.
- The text cautions that a short-term ratio and narrow filters can create selection bias or miss other opportunities.
- The examples contain inconsistencies between the stated price and the code, and the ratio calculation needs verification.
- No backtest or return evidence is provided.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.